Billy and Jimmy Are Identical Twins

question 14

Multiple Choice

Billy and Jimmy are identical twins.As they grow older,____.

• A) their IQ scores are most likely to become more similar
• B) their IQ scores are most likely to stay exactly equal to one another
• C) no one can predict how their IQ scores are likely to change
• D) their IQ scores are most likely to become less similar

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Definitions:

Relative Frequency Distribution

A representation of the number of times each value occurs relative to the total number of observations.

Cumulative Frequency

The sum of frequencies accumulated up to a certain point in a distribution, showing the number or proportion of observations below a particular value.

Cumulative Relative Frequency

The accumulation of the previous relative frequencies up to a certain class or point, representing the proportion of observations.

Percentage

A proportion or share represented as a fraction of 100, used to express how large or small one quantity is relative to another quantity.